Both, and yes I quite disagree with you in some fundamental way. They have a specific niche while being severely over hyped.
I agree that blockchains are overhyped. But I don't think the value of P2P uncensorable money can be overstated in this day and age.
Again I agree ... it is nice to know the option exists but the value of this option isn't static at every point in time or every context -- the mere existence of it creates a certain level of bullshit that needs to be put up with.